Part Number Index ......................................................345
PRODUCT INFORMATION
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2 • Hydraulic Filtration
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Product Line OverviewComprehensive Hydraulic Filtration Solutions
Low pressure filters are the most commonly used type of filter in hydraulic circuits, used most often in return line applications.
Donaldson low pressure filters are rated for working pressures up to 350 psi (2400 kPa). In-tank and in-line configurations are available to accommodate virtually any application.
Medium Pressure Filtration Max operating pressure < 2,000 psi (138 bar)
Medium pressure filters can be used in applications up to 2000 psi (13790 kPa). Donaldson offers both spin-on and in-line cartridge-style filters.
Donaldson Duramax® filters are the highest rated medium pressure spin-on filters available. Duramax filters are proven, reliable, long-lived and easy to install.
High Pressure Filtration Max operating pressure < 6,500 psi (450 bar)
High pressure filters are positioned between pumps and critical components such as cylinders, motors and valves. They help protect these critical components from catastrophic failure.
Donaldson heavy-duty high pressure filters are rated for working pressures up to 6500 psi (44818 kPa). Various porting sizes and types, including manifold style, are available for a wide range of applications.
Hydraulic Filtration • 3
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Product Line OverviewComprehensive Hydraulic Filtration Solutions
Model Series Max Flow Max Pressure Porting Size Options Page # gpm (lpm) psi (kPa) / bar
4 • Hydraulic Filtration
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Product Line OverviewComprehensive Hydraulic Filtration Solutions
Off-Line Filtration
The Industry's Largest Selection of In-Stock Replacement Filters!
Donaldson offers a complete line of hydraulic filter heads and housings for low, medium, and high pressure applications. Spin-ons and cartridges are available in a wide range of filter medias.
When replacing another filter brand, our comprehensive and up-to-date cross-reference guide, available at crossreference.donaldson.com, can guide you through performance improvement possibilities.
Our worldwide network of authorized distributors is ready to serve you with their extensive experience with hydraulic circuits and with Donaldson filters. Most distributors stock our filters, and we have quick-ship programs so you can get the filter you need, when you need it.
To find a distributor near you, visit www.buydonaldson.com.
Replacement Filters
The Donaldson Filter Cart, Filter Panel and Filter Buddy™ offer convenient off-line filtration, flushing and fluid transfer. Use them with your industrial and mobile equipment to achieve and maintain proper ISO cleanliness levels.
Filter Cart Designed with performance, convenience and safety in mind. Includes value-added features to protect your machinery and equipment from breakdowns caused by contamination.
Filter PanelProvides fixed/mounted offline filtration and a turn-key approach to supplemental filtration.
Filter Buddy™ This handheld portable system provides the capability to kidney loop reservoirs that you normally cannot reach with larger filter carts. Its small size and light weight allow for carrying up and down stairs and access into tight or confined spaces.
Hydraulic Filtration • 5
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Product Line OverviewComprehensive Hydraulic Filtration Solutions
Accessories
Accessories for hydraulic circuits, lines and reservoirs that will help you maintain proper ISO cleanliness levels.
T.R.A.P. breathers provide fast-acting protection against airborne moisture and particulate contamination. They stop solid particulate down to 3 µm at 97% efficiency and prevent moisture from entering the reservoir. Water-holding capacity is regenerated with every oil return phase. This self-regenerating capability enables extended breather life.
Filter Service Indicators
• Service indicators to maximize filter lifeHydraulic Line Accessories
• Pressure gauges for monitoring system pressure
• Hoses and test points for sampling oil and determining ISO cleanliness levels
• Flanges to connect components
• Valves for system controlReservoir Accessories
• Suction strainers help protect pumps from damage
• Diffusers for reducing aeration, foaming, turbulence and noise caused by return lines
• Sight and level gauges available, including plastic or steel screw-in styles for use in a variety of applications
• Plugs, caps and vents for small power units and gearboxes
• Filler breathers and caps come in chrome, zinc, epoxy-coated weatherproof finishes, and corrosion-resistance techno polymer – lockable, dipsticks and side-mount versions available.
6 • Hydraulic Filtration
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Hydraulic Filtration SolutionsEngineered for Today's Industrial & Mobile Equipment
Low Pressure or Suction Filter
Strainer
Breather
In-Tank Return Filter
Medium or High Pressure Filter
Low Pressure or Medium Pressure Return Line Filter
The best solutions for clean, dry oil.Count on Donaldson to have the right filters, contamination control products and services to protect critical components in hundreds of applications – in the factory and on heavy-duty mobile equipment.
When you need hydraulic filtration, Donaldson delivers.
High-Performance Filtration
Increase dirt-holding capacity and lower pressure drop (∆P) with Donaldson high-performance DT filters.
Full-Product Range
The industry's largest selection of in-stock filters and accessories –manufactured with consistent, high-quality performance.
Expert Technical Support
Prompt, accessible and knowledgeable customer service experts.
Hydraulic Filtration • 7
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Low Pressure Hydraulic Filters
High Pressure Hydraulic Filter
Level Gauge
Breather
In-Tank Hydraulic Filter
Medium Pressure Hydraulic Filter
Pressure Gauges
Hydraulic Filtration SolutionsEngineered for Today's Industrial & Mobile Equipment
Off-Line Filtration
Filter carts, filter panels and Filter Buddy™ handheld filtration.
Water Removal
Systems and products designed to prevent water ingression and remove entrained water.
Vacuum Dehydrators & Coalescers
Quick removal of free water, dissolved water, particles and gases.
Performance Under Pressure• Low, medium and high pressure filtration
• Spin-on, cartridge and in-tank style filters
• Hydraulic line and reservoir accessories
• T.R.A.P.™ reservoir breather technology
any
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8 • Hydraulic Filtration
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Common Fluid Power Symbols and Circuit Diagrams
Directional Control Valves (Unspeci�ed Actuation)
2 Port, 2 PositionNormally Closed
4 Port, 2 PositionSpring Return
4 Port, 3 Position, Spring Centred(See Below for Centre Conditions)
2 Port, 2 PositionNormally Open
Lines
Circular
Instrumentation and Pipeline Components
Continuous Line: Flow Line, Symbol Enclosure
Dashed Line: Pilot Line, Drain LineSystem Enclosure: Long and Short Dashes around Two or More Component Symbols
Large Circle: Pump, Motor
Small Circle: Measuring Devices
Semi-Circle: Rotary Actuator
Flexible Hose
Lines Connecting
Lines Crossing
SquareOne Square: Pressure Control FunctionTwo or Three Adjacent Squares: Directional Control
Hydraulic Filter LocationsComprehensive Selection of Filtration Solutions
Reservoir TankWater in reservoir tanks is a serious threat to hydraulic systems. Dirt, particles and microbial growth are also
common contaminants existing in tanks.
Actuator
PumpMotorM
Air
Oil
Water
Microbial Growth
Directional Valve
Reservoir Accessories Sight and level gauges available.
Diffusers are used for effectively reducing aeration,foaming, turbulence and noise
caused by return lines.
Reservoir Air Breather Prevents ingression of airborne
contaminants from entering the reservoir tank.
Suction StrainerRemoves large particles or objects built
into the system during assembly or introduced during standard maintenance.
Prevents catastrophic failure.Also known as a safety filter.
Pressure Line Filter Protects high-pressure side components. Helps prevent component wear or failure brought about by debris in the system.
Suction Line FilterDesigned to remove particles in the 5 to 150 micron range. Easy to service and
less expensive than other types of filters. Low by-pass valve use recommended to
prevent pump starvation.
Kidney Loop Filters Off-line filtration supplements system cleanliness. Use with
industrial and mobile equipment to achieve and maintain proper ISO
cleanliness levels.
Return Line FilterCaptures debris from component wear or
ingression before it travels into the reservoir.
In-Line Accessories Pressure gauges for monitoring system
pressure. Hoses and test points for sampling oil and determining ISO cleanliness levels.
Flanges and valves for system control.
Typical Hydraulic Circuit and Filter Locations
In-tank Return Line FilterSpace-saving in-tank return and
suction line filters.
Pump
Filter Symbol in a Circuit
10 • Hydraulic Filtration
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Industry Shaping TechnologyAdvanced Media Technology for Optimal Filtration Performance
DT Synteq™ Synthetic Media (High-Performance) DT grades of Synteq media utilize a blend of borosilicate glass fiber whose matrix is bonded together with an epoxy-based resin system. Donaldson filter media scientists found this to provide the best available chemical resistance for the broadest array of hydraulic applications. DT Synteq is ideal for use with phosphate ester and water glycol fluids.
Synteq™ Synthetic Media This media's uniform synthetic fiber structure delivers higher filtration efficiency and longer filter life. Synteq filter media technology is ideal for synthetic fluids, water glycols, water/oil emulsions, HWCF (high water content fluids) and petroleum -based fluids. The smooth rounded fibers provide low resistance to fluid flow.
Cellulose MediaThis media often has lower beta ratings, providing effective filtration for a wide variety of petroleum-based fluids. The smaller pores result in greater flow resistance, in turn causing higher pressure drop.
Water Absorbing MediaThis media is formulated with absorbents and resins to remove moisture and condensation from petroleum-based fluids.
Wire Mesh MediaWire mesh media consists of stainless steel, epoxy-coated wire mesh. This media is used to catch very large, harsh particulate that would rip up a normal filter. This media is also useful as a coarse filter in viscous fluid applications.
Donaldson offers extensive filter media technology choices for hydraulic filters – over 35 different formulations. These multiple formulations enable our engineers to develop filtration systems that meet or exceed a wide variety of customer specifications.
Synthetic media captures more and contaminants smaller than cellulose media. When an application requires higher efficiency filtration than what cellulose filter media can deliver, Donaldson uses Synteq™synthetic media technology.
We use a variety of techniques to enhance filter media so it can withstand the high differential pressures found in typical hydraulic systems. Oven-curing, wire backing and multiple layers all contribute to our media integrity.
More detailed information on filtration media is available in the technical reference guide.
Donaldson Media Formulations Set the Standard for Filtration Performance!
Filter Media Design & Development
From traditional cellulose to synthetic – the development of proprietary filtration substrates is at the heart of every Donaldson filtration system. If one of our existing media formulations does not meet our customer’s specifications, our scientists use our in-house media development laboratory to develop new formulations that meet or exceed your requirements.
expansionLow & High PressureExpansion into in-tank and In-line filtration
U.S.A. Hydraulic filter manufacturingbegins
Filter MediaDeveloped pleated
string-spaced mediaDuramax®
Mid-PressureDuramax product
line introduced
Synteq XP™ Filter Media
High-performance media for OEMs
Synteq™ MediaHigh performance, fully synthetic media developed
South AfricaManufacturingexpansion
DT CartridgesIntroduced high performance hydraulic product line
2010
Western FIlterAcquisition
• Sensors, valves, and switches in a variety of styles and port sizes
• Unique filtration performance options
• Integrated mounting brackets
• Broad range of package sizes
• Custom design options
• Die-cast and sand-cast custom head assemblies integrated into systems
• Enhanced system component protection
• Customized to existing filter interface
– no system modification required
Low Pressure Systems
• High-performance media options
• Synteq™ Filtration Media
• Material options - metal or plastic
• Multiple head interfaces
High Pressure SystemsMedium Pressure Systems
Industry Shaping TechnologyHydraulic Filtration Trends and Evolution
Hydraulic Filtration System Trends
Today's hydraulic systems are intolerant of corrosion, require higher cleanliness standards, and demand increased filtration performance. Hydraulic-powered vehicles and equipment owners desire the assumption of lower operation and ownership costs – a unique challenge that Donaldson understands.
Unique Filtration SystemsDonaldson continually strives to introduce new and effective filtration technologies that work within your engineering specifications and add customer value.
T.R.A.P.TM THERMALLY REACTIVEADVANCED PROTECTION
12 • Hydraulic Filtration
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Engineering Capabilities• Design centers in three key regions –
United States, Asia and Europe
Prediction and Simulation• CAD
• Media modeling
• Fluid mechanics
• Structural analysis
• Thermal analysis
Development and Validation
Filter Durability• Filtration performance testing per
applicable SAE and ISO standards
• Fabrication integrity
• Environmental conditions - Salt spray and thermal cycling
• Pressure fatigue
• Flow fatigue
• Hydrostatic burst
• Flow benches
• Vibration benches
• Gravimetric analysis
Rapid Prototyping• SLA, SLS
• Investment casting
• RTV molding
Test & Evaluation Tools
Structural Analysis• Per SAE, ISO, and NFPA standards
• Burst
• Collapse
• Pressure impulse and fatigue
Tensile Compression• Used to test material, component
and assembly properties
Environmental Chambers• Allows testing at hot or cold
temperature, with humidity control
Flow Test Benches• Allows measurement of static and
dynamic flow and restriction for a device
• Allows calculation of device restriction at varying flows and temperatures
• System simulation
Filtration Performance Testing• ISO, SAE, NFPA
• Customer standards
• Contaminant (particle or water) removal efficiency
Donaldson has pioneered the use of a wide range of engineering, design and testing tools used during the product development and validation process.
Industry Shaping TechnologyGlobal Design & Logistic Capabilities
Hydraulic Filtration • 13
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Design Validation• Test cell locations in three key regions
– United States, Asia and Europe
• High viscosity ∆P (pressure drop)
• High temperature
• Flow fatigue
• Used oil analysis
• Component durability
• 24/7 durability testing
• Web-based test cell monitoring access
• Fluid compatibility
Vibration/Shaker• Multiple benches
• Performance vibration with flow test
• Can apply random, shock or custom variable vibration profiles
• Capable of hot or cold tests
Field Testing• On and off highway
• Heavy-duty
• Tests conducted on both end user and OEM applications
Field Data Acquisition• Real time measurements
• Remote communications
• On-line collection tools
• Review daily, weekly and monthly reports to analyze operational trends
Quality Certified• All facilities are ISO/TS certified
Quality Controls• Consistent, reliable product
• On-site verification test units and equipment
• Part number specific PLC controls
• Manufacturing dates for tracking and warranty
ManufacturingLocations for Liquid Filtration• United States, Canada, Mexico,
Europe and Asia-Pacific
• Located strategically with global partners
Industry Shaping TechnologyGlobal Design & Logistic Capabilities
Base Component Materials• Built for long-life, durability,
corrosion resistance and liquid compatibility
• Metal and non-metal materials
• Methods to enhance media durability include oven-curing, wire backing and multiple layered media
Packaging Options • Returnable packaging
• Heavy-duty packaging
• Pallets ISPM-15 compliant for international routing
Logistics / Distribution
Donaldson has established a global distribution network to serve our customers locally and around the world. We operate as a global company with a network of primary distribution locations that support a mature hub of regional distribution centers and warehouses.
Donaldson distribution centers are strategically located around the globe to quickly and accurately deliver filtration and exhaust products wherever replacement products are needed. We work with a network of transportation, third party logistics companies, consolidators and cross-docking facilities to meet or exceed our customers’ requirements.
Customers around the world benefit from our umbrella of distribution centers. We focus our efforts on local support and the capabilities of our staff. We continue to make significant investments in facilities, systems, supply chain relationships and staffing to offer the best order fulfillment options available.
14 • Hydraulic Filtration
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Your Complete Hydraulic Filtration Supplier
Donaldson hydraulic filters and accessories reduce a broad range of contaminants to keep sophisticated equipment running smoothly, resulting in efficient systems with superior performance. Whether it’s located outdoors on equipment or inside a crowded manufacturing plant, hydraulic components need clean hydraulic and lubrication oil for maximum life and optimal productivity.
